效力 (xiào lì): Efficacy / effect (Verb, Noun) — Meaning & Stroke Order

He has served the company for ten years.

Despite his tremendous effort, the efficacy of the final plan was negligible.

The efficacy of this new type of cleaner is astonishing; it can even easily remove stubborn stains.

In order to serve the country, he gave up a high-paying job.

To enhance the market effect of the product, they hired a top-notch marketing team.